The Mega Dream EX Energy Mirror collection represents a significant subset of the Pokémon Trading Card Game, which has seen a resurgence in interest due to nostalgia and competitive play.

Given that this set includes over 120 cards, collectors will appreciate its scope, especially considering the condition breakdown, where 50% of the cards fall under the desirable "A" category with minimal wear.

As a one-owner item purchased from an authorized retailer, this set offers reassurance of authenticity, which is crucial in the often counterfeited trading card market.

With current bids starting at ¥10,000, this collection reflects a typical entry point for high-quality Pokémon cards in Japan, where collectors value both condition and provenance.